Results 121 to 130 of about 64,859 (345)
Functional modulation of primary visual cortex by the superior colliculus in the mouse
The role of the superior colliculus (SC) in modulating V1 cortical activity is not clear. Here, the authors demonstrate the functional role of SC in modulating V1 responses through an excitatory pathway via the dorsal lateral geniculate nucleus.
Mehran Ahmadlou+2 more
doaj +1 more source
Hearing loss often triggers an inescapable buzz (tinnitus) and causes everyday sounds to become intolerably loud (hyperacusis), but exactly where and how this occurs in the brain is unknown.
Yu-Chen Chen+13 more
doaj +1 more source
Gating Input to Visual Cortex by Feedback to LGN [PDF]
Anatomical studies have documented massive back-projections from higher to lower visual cortices and to the lateral geniculate nucleus (LGN). The large number of synapses from these sources suggest that they should have a profound influence on the ...
Przybyszewski, Andrzej W.+1 more
core +1 more source
Robust Estimation of Self-Exciting Generalized Linear Models with Application to Neuronal Modeling [PDF]
We consider the problem of estimating self-exciting generalized linear models from limited binary observations, where the history of the process serves as the covariate. We analyze the performance of two classes of estimators, namely the $\ell_1$-regularized maximum likelihood and greedy estimators, for a canonical self-exciting process and ...
arxiv
The purpose of this study was to investigate the role of response latency in discrimination of chemical stimuli by geniculate ganglion neurons in the rat.
Joseph M Breza+2 more
semanticscholar +1 more source
A Newly Defined, Common Ophthalmologic Condition Requires Special Neurological Attention
A host of acquired abnormalities in visual function are known to occur in persons who suffer stroke, traumatic brain injury, and neurodegenerative disorders. Cerebral visual impairment occurs in children with early neurological injury or disorders, especially neonatal hypoxic‐ischemic injury.
Kristina K. Hardy+2 more
wiley +1 more source
It has been suggested that there may be an imbalance of excitation and inhibitory processes in the visual areas of the brain in people with migraine aura (MA).
Louise O’Hare, Choi Lam Wan
doaj +1 more source
A theoretical framework for retinal computations: insights from textbook knowledge [PDF]
Neural circuits in the retina divide the incoming visual scene into more than a dozen distinct representations that are sent on to central brain areas, such as the lateral geniculate nucleus and the superior colliculus. The retina can be viewed as a parallel image processor made of a multitude of small computational devices.
arxiv
Abstract Neochelys is an exclusively European Eocene podocnemidid genus belonging to a linage that reached this continent at the early Eocene. The so far available anatomical information about it is relatively abundant, especially considering that of its shell, at least partially preserved for the eight valid species currently considered.
Marcos Martín‐Jiménez+1 more
wiley +1 more source
Visual deprivation modifies oscillatory activity in visual and auditory centers
Loss of vision may enhance the capabilities of auditory perception, but the mechanisms mediating these changes remain elusive. Here, visual deprivation in rats resulted in altered oscillatory activities, which appeared to be the result of a common ...
Ping Pan+4 more
doaj +1 more source